Combination step-ladder.



F. BLAIR. COMBINATION STEP LADDER. APPLIOATION FILED APR. 8,1911.

1,035,770. Patented Aug. 13,1912.

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UNITED STATES PATENT OFFICE.

ROBERT F. BLAIR, 0F LIGONIER, PENNSYLVANIA, ASSIGNOR TO HARRY S. LOHRAND JAMES G. LOI-IR, BOTH 0F LIGONIER, PENNSYLVANIA.

COMBINATION STEP-LADDER.

To all whom it may concern Be it known that I, ROBERT F. BLAIR, acitizen of the United States, residing at Iiigonier, in the county ofWVestmoreland and State of Pennsylvania, have invented new and usefulImprovements in Combination Step-Ladders, of which the following is aspecification.

This invention relates to improvements in step ladders and particularlyto a combined step ladder, stair rod, and extension ladder.

The primary object of the invention is to provide a ladder with anadjustable support, the said support having both its leg members formedwith a plurality of depressions or pockets, which are arranged for thereception of a swinging bail se cured to the ladder proper, and wherebythe support may be adjusted at any desired position in relation to theladder.

With the above objects in View, and others which will appear as thenature of the invention progresses, the improvement resides in the novelconstruction and combination of parts hereinafter fully described andclaimed.

In the drawings accompanying this specification, there has beenillustrated a simple and approved ladder constructed in accordance withthe present invention, it being understood, however, that the showing ofthe drawings is merely illustrative and that minor changes, as to form,proportion, material, etc., which fall Within the scope of the appendedclaim, may be made, if desired.

In the drawingsFigure 1 is a perspective view of the ladder constructedin accordance with the present invention. Fig. 2 is a side elevation ofthe same showing the support in an adjusted position to accommodate theladder to an elevation, such as a step or the like. Fig. 3 is a similarview illustrating the support swung and sustained upon the ladder. Fig.4 is a detail sectional view showing the manner of connecting the shelfto the ladder.

In the drawings, the numeral 1 designates the ladder proper. This ladderis constructed in the usual form and comprises a pair of spaced legswhich are connected with .the usual steps 2. The upper portion of theladder is preferably provided with a metallic casting designated by thenumeral 3, the said casting having one of its faces Specification ofLetters Patent.

Application filed April 8, 1911.

Patented Aug. 13, 1912.

Serial No. 619,760.

incut to form the shoulder 4. It is to be understood that one of thesaid castings 3 is provided upon each of the leg members of the ladder,and each of the said castings is formed with a longitudinally extendingdepression which adapted to receive the top step 5 of the ladder, eachof the said castings 3 is provided with an opening 6, and the saidopenings are adapted to receive the inbcnt ends 7 of a substantiallyU-shaped bail S.

The numeral 9 designates the support or prop of the ladder. This supportcomprises a pair of spaced legs, the same being connected togetherthrough the medium of a plurality of rungs l0, and each of the legmembers of the supports are provided with a plurality of depressions orpockets 11 within which is received the substantially U-shaped bail 8.These pockets are arranged diametrically opposite each other, and thesaid pockets are preferably reinforced through the medium of metallicmembers 12. The upper extremity of the leg members of the prop orsupport are beveled as at 14 to snugly engage with the substantiallyvertical rear edges 15 of the castings 3, while the upper portions 16 ofthe leg members of the support normally contact with the ledge orprojections l of the said castings 3.

The supporting shelf, which is designated by the numeral 17 is pivotallyconnected with the leg members of the ladder proper, and the said shelfis sustained in a proper adjusted position, or in a position parallelwith the top step 5. through the medium of a pair of pivoted links 18and 19. These links are connected together by a rule or carriage jointso that when the shelf is arranged parallel with the top shelf themember 17 will be effectively supported, and whereby the said member 17may be swung to a desired position upon the ladder when the said memberis not to be used.

From the above description. taken in connection with the accompanyingdrawings, it will be noted that the supporting member 9 may be readilyadjusted and sustained in said adjusted position upon the rear of theladder if desired. and that it will be also apparent that the saidsupport may be swung to the face of the ladder and effectively sustainedthereon through the medium of the bail 8.

Having thus fully'described the said invention, what I claim is A stepladder comprising parallel legs and connecting steps, the upperextremity of each leg provided with a metallic casing having arearwardly extending portion and provided on its upper inner edge with adepression or seat for the reception of one end of a top step, saidmetallic casings being further provided with horizontally alinedopenings, a second ladder comprising parallel legs and connecting rungs,said legs being equally spaced with respect to the legs of the firstladder and having their upper extremities'beveled on the forward sidethereof so that said extremities will fit inbent so as to be received byand rotatably mounted in the openings provided in the metal casings onthe first mentioned ladder,

said bail adapted to engage with the upper pair of pockets in the secondladder so as to hold the upper extremities of the legs thereof inposition against the metallic casings on the first ladder, said secondladder also adapted to be placed in inverted position with its frontside against the front side of the first ladder so as to form anextension thereto, the said ba-il adapted to be swung over the top ofthe first ladder so as to bring it into a position wherein it can engagewith a pair of pockets in the second ladder and support the same, andsaid second ladder further adapted to be placed against the rear side ofthe top of the first ladder so that its upper extremity projects abovethe top step of the first ladder and being held in its position by thebail which engages with a pair of pockets in the second ladder.

In testimony whereof I afiiX my signature in presence of two witnesses.

ROBERT F. BLAIR.

Witnesses T. E. GnHREs, I. M. GRAHAM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, D. C."

